The reason I ask is this. I play in a game as a halfling rogue-ranger with a Cloak of Arachnida, granting me Web once per day. I used it all the time, it worked awesome. I could tell I was somewhat irritating to the DM. We recently had a Sorceror join the party, and one of his favorite tactics is to Web the enemy and then Fireball them. Now I can see the DM is getting pretty annoyed. BTW we are playing Return to the Temple of Elemental Evil, so lots of dungeon-space setup perfectly for web. Web has become THE 2nd level spell to have, and it comes into play in nearly every combat where there are more than a few enemies.
Another reason I got to thinking about this is that Web is specifically discouraged in the WLD, and I can see why... any encounter in a relatively confined space, dealing with multiple opponents is just incredibly ripe for Web.