Do we have to be overly concerned that other people are successful? Do other people's successes indicate our own demise? I hope the answer is “no.”
I find that when I'm heads down and working on my own stuff, I don't have time to get upset about what other people are doing. Whether that means success for my own blogs or not, it certainly means that I'm focusing on my own work…which is the only way to develop something meaningful. Sure, we should all know what's going on out there, but it's better to take inspiration from successful people rather than to try to tear them down. In the end, what does tearing down someone achieve?