What pages, channels, blogs etc?
For me i will choose thru the best known campaign managers with no negative trust. Campaign managers will do the most research about the ICO before he accept the task of handling the campaign because their reputation is at stake that if they handle a bad ICO it will reduce their good ratings but if the ICO is successful many participants will going to join because they trust the campaign manager.
Ya, this also contributes but you should know that sometimes the campaign managers may not know that an ICO is a scam, so it shouldn't be their fault if an ICO is scam or not neither unsuccessful. Some scam ICO may even use a good or popular Campaign manager to get what they want. So it is better to make a personal research and read their white paper properly.
Agree with you, campaign can be one thing to consider when choosing ICO but it should not be the main thing to consider. There are many other things to decide which ICO is promising and have a good future. Roadmaps, whitepaper, teams, which can be found on the official website. This should be the first thing to read before going to other aspects.
Some times I do read on some website about ICO such as icorating and icobench for additional info. Reading some review/comments on their official thread in this forum is also good thing to do. Bear in mind that good campaign manager does not mean good project.