Yes. In fact if you do some due diligence, you'll most likely find that they're one of the more respected affiliate networks.
If I have a choice between Linkshare or Share-A-Sale and can only afford to start up one at a time which one should we start up first?
it depends on the niche if you are selling, check which affiliate has more products for your niche..shar a sales website is kinda irritating but linkshare uses a better interface and their links are encyrpted stuff that
I agree,it will depend on your niche.You can still try both then make your observation which works fine most or the one which gives you more sale.Choosing the affiliates can be more accurate if you have a trial for you to exactly know its capability of giving you money.
I have a good experience working with Linkshare and ShareAsale as account manager as well as a publisher. It all depends upon your products which you need to sale, based on my observations both have quality affiliate network but it's hard to make them interested in adding a deal. PM me with details, I may help you out