Some product giveaways and sites are probably better left alone.As a thread starter,like others have pointed out,the best rule of thumb is to post a giveaway for a product that you are familiar with and preferably one you have used or at least tried.
Posting every product given away is counterproductive to the mission of this site.That being not every product given away is necessarily the best option.Unbiased reviews,other than those posted on the vendors site or the giveaway site,will give you an idea also about the product you are dealing with.
As with all giveaways(excluding MalwareTips giveaways) that are posted from external links members should do some research on the product and the site for the giveaway.
Not every product given away is necessarily the best and some come bundled with unwanted software.
Any member can ask a staff member and or a trusted member for advice on a product if they cannot find anything about the product already posted within the forums.Most members here are knowledgeable to know what products are safe.
Trusted members will have a green badge with the word "Trusted" below their avatar.See below for an example