(better safe than sorry, don't write anything in the subject/body, just send it in a text document, as my spam filters may be brutal)

P.S. every webmaster is more than capable of gathering statistics about visitors, etc, with great accurasy - all of the below websites offer traffic for a certain price, and have stated in their TOS that their tracking methods are the most accurate, while ours will not be.  i have completely understood that, furthermore i am basing these reviews on my own statistics which appear 100 TIMES more accurate and 500 TIMES more detailed, since theirs just show a number, and that's it!  if i were to base my reviews on their numbers, i might as well jump off a bridge.  Since i do not wish to jump off a bridge, i'm basing them on my own statistics

(very important, so please read) Final Notes (very important, so please read)

       Redirected Traffic/Redirected Visitors: if your website earns from google adwords, you will be braking googles TOS.  this type of traffic isn't for everyone, and most likely not for websites that are non-profit.  frankly, nothing is better than SEO (Search Engine Optimization).  i may write an article about that later on, and i will also ensure that it is detailed and accurate.

       Targeted Traffic/Targeted Visitors: if your website earns from google adwords, you will be braking googles TOS.  the reality is that there really sin't such a thing as targeted (a maximum of 20% may end up being targeted, with no guarantee for the rest).  most services out there can not do better than offering worldwide, and untargeted traffic.  mind you, just like Redirected Traffic, your chances of getting sign-ups and/or sales, is very, very low, if actually existant.

       Pop-up Traffic: if your website earns from google adwords, you will be braking googles TOS.  unlike the two mentioned above (which are quite similar, and almost indistinguishable), this one is irritating and it is considered as spamming, instead of tricking users like the two above.  most services real services (there are very few) will be pop-up, weather they admit it or not.

       Pop-under Traffic: if your website earns from google adwords, you will be braking googles TOS.  unlike Pop-up Traffic, this one isn't as irritating, and less intrusive, but still considered as spamming/cheating.  in the end you can't trust most of them, if not all.  if your website brakes out of frames, what harm could it do if it's simply a pop-up or a re-directed visitor? that's something worthy of considering before ordering from any of the above, and all their like, since braking out of brames would have nothing to do with it !

For the final note, i'd like to mention that almost everyone that orders (mostly non-profit websites that may offer interesting content to very few of the visitors they receive) will see different results.  The facts remain that if you try one of the more trusted ones, you simply give from $6 to $9, and see how it goes.  If in the end your statistics end up showing that you've gotten at least two times more visitors who stayed on your website from 2minutes to 1 hour (no less, and no more), than the usual you'd receive from google adwords (just an example), you may be better off using the above sites and their like at your own risk.  Consider = Vile, as the ideal word to describe them.