Titles of blog posts and web pages are very important. It important to make the title appealing and interesting at the same time, because it is usually the first thing people notice when people see your post or web page in the search results of search engines, feed readers (blogs) and news aggregators.
An interesting fact about titles in the English language is that they follow different capitalization rules for words used in the title compared to the capitalization rules of regular content.
A simplified but erroneous rule is to capitalize every single word in the title. It does look awkward in most cases, independent of the fact that it is just wrong to do it that way.
Using their gut feeling is one approach many people use, but following specific rules that indicate which word(s) needs to be capitalized and which word(s) do not is probably a better way of doing it.
Most people probably have heard of these rules and perhaps had them as a subject at one point in time at school. The people who had it in school can consider this information a "refresher", especially if it has been a while since you learned it.
In titles of songs or albums and band names, blog posts or articles, the standard rule in the English language is to capitalize words that:
1. Are the first or the last word in the title
2. Are not conjunctions ("and", "but", "or", "nor"), adpositions ("to", "over"), articles ("an", "a", "the"), or the "to" in infinitives.
Correlative conjunctions are pairs of conjunctions which work together to coordinate two items. English examples include for, and, nor, but, or, yet, and so, both ... and, either ... or, neither ... nor, and not (only) ... but (... also).
Subordinating conjunctions, also called subordinators, are conjunctions that introduce a dependent clause; English examples include after, although, if, unless, and because. Another way for remembering is the mnemonic "BISAWAWE": "because", "if", "so that", "after", "when", "although", "while", and "even though".
An adposition is an element that combines syntactically with a phrase and indicates how that phrase should be interpreted in the surrounding context. "Adposition" is a general term that includes the more specific labels preposition, postposition, and circumposition, which indicate the position of the adposition with respect to its complement phrase. Adpositions are among the most frequently occurring words in languages that have them. Examples: of, to, in, for, on, with, as, by, at, from
The words: the, a and an
The infinitive of a verb is its basic form with or without the particle to. Therefore, do and to do, be and to be, and so on are infinitives.
There are always borderline cases, so don't worry about it too much, but using these rules should help with the decision if or if not a word in the title should be capitalized, especially if your gut instinct took time off right at the time when you are finalizing a great post or article for your blog or website.