I think it is a sign of negative market, people aren't buying ico unlike when market was uptrend presently market is downtrend as a result it's hard for ico to raise money to start plans laid down when market recover people will start to buy ico again.
Yes it is obvious. I think we all need to wait for prices to go up in the market. How to just find out when it will be. I'm already tired of waiting.
That depends on the developer, you should do a research about does the developer actively managing the community and created regular update regarding the development progress.
This has become the main problem when there was no a lot of updates and so many people will doubt about that and then they are leaving the project. this gives a lot of impact to the price.
Any delays are a sign of weakness of a project. Strong projects aren't totally dependant on the state of the market, they usually collect HardCaps at downfalls. If an ICO is postponed, it's a signal that you should not invest or participate in Bounty.