First off the claim that the adventures are linked in one giant plot thread is false. Their is no real linkage and that is a good thing allowing the DM to use whichever adventures they want. Like any product consisting of multiple authors some of the adventures are good, some are mediocre and some are very very bad. Each adventure is fairly short and can be run in 2 short sessions or one long session. The only problem that is omnipresent through all adventures is that almost every adventure features a different unique monster and with one exception (brain vine) the new monsters are terrible and unnecessary and should be replaced by a similar monster of equivalent CR from whatever monster manual type books you own.
The main reason I have rated this product so highly is that it is $3.95 for 24 adventures/260 pages. If the price was higher my rating would be a lot lower, but at the current price the product is a pretty great deal.