Everything, and I mean everything, is just your humble opinion. In making definitive lists you must end conceding publicly that some things, even things that you hate, are more influential or better than what you love personally. I like Aerosmith's Nine Lives more than Toys In The Attic, but I won't reflect on a list of the best Aerosmith albums, now will I?
It always happens, a huge landmark artist has just died or we are coming up on the anniversary of their passing, and we try to compress what was probably a long and illustrious career into 10 songs that you will only listen to for 30 seconds at a time. Always make sure to leave out one of their undisputed classics to cheese off someone who found the blog through a fan forum. What's this "We Will Rock You" you speak of?
I think I have seen about 10 "Songs Featuring The Use Of A Homemade Theremin" lists clogging my Twitter feed. OK, not really, but you get the idea. Even better on these are the comments where music geeks fight to the virtual death to win dominance over their boneheaded brethren. "1965? It was 1966 you dipshit. Don't quit your day job."
There is a big punk show coming to town, so a music writer makes a vague connection to the concert by making a "Best Punk Bands Of All Time" list. This can only invite trouble, especially if the writer takes a bold step and puts Green Day on said list.
Oh boy. Even if you add a disclaimer saying these are your own favorites, you will incur the wrath of thousands who didn't read your dumb little intro.