This is the 10232nd most frequent Russian word.
блога
"Блога" is the genitive singular form of "блог," meaning "blog" in English.
Here, 'блога' is in the genitive case, indicating that the article belongs to the blog.
Я написал статью для блога.
I wrote an article for the blog.
In this sentence, 'блога' is again in the genitive case, used to show possession or attribution of the name to the blog.
Это название популярного блога.
This is the name of a popular blog.
The word 'блога' in genitive case is used here to specify the blog whose content is being referred to.