Advantages:
Really cheap traffic - none of this silly 'black-box' QS *at the moment*.
Traffic volumes are lower, but conversions remain about the same, so overall, better for me as I'm paying less per click so for the same number of clicks, I make more profit.
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Disadvantages:
Hopeless cp - incredibly slow and I keep getting error messages "unknown error". I can put up 5 ads under Adwords in the same time that I can put up one under Adcenter. This is down to two things - 1, the site itself is incredibly slow. 2, the CP isn't configured for large campaigns - I don't want to have to tell you for each ad is to be shown in these particular countries....give me them as default please!! What worries me is that it's slow now - what's it going to be like when they have the same number of subscribers as Yahoo/Google?
Keywords get rejected for absolutely no reason whatsoever - and they don't seem to specify why. I tend to just stick 'em all back in and they generally get accepted the next time around, so total inconsistency from their reviewing team.
Site always seems to be down - today, I can login, but I can't edit any of my ads. Price management seems to have been down for about 24 hours on and off now.
The ad/keywords reviews take an absolute age - up to 2 days before they go live. I haven't tried this, but a couple of people have also said that if you edit an ad, it goes offline until a review takes place, meaning up to 2 days again where your ad isn't shown. I can't confirm this, but it's cruddy if this is the case....
There's no consistency in when your ads/keywords get reviewed. Example: I uploaded 10 early yesterday morning. 3 went through last night. The rest are still pending. The three that were accepted weren't even the ones I did first - they were in the middle of the batch somewhere. All ads in the batch are for similar products, so I don't get why there's such a huge time discrepancy, nor why some go through fast and others don't.
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I'd love to see a client piece of software (like google's) where I can work on my ads, click a button to upload them and go have a cup of tea. I guess they need to work through their other issues first though
All in all, it's *way* too buggy right now. Too slow to put ads up, and the center doesn't work properly. If it wasn't for fairly good conversions, I honestly wouldn't bother and I'd wait a couple of months until they have it sorted - I'm trying to work on ads today, and I'm on the verge of throwing my laptop out the window (yes, it *really* is that bad!!) so I'm sticking with what I have, and I'm going to leave it ticking over and I'll come back in a few months and fiddle with it again....