There is a right way and a wrong way to use the bold attribute in your articles. Lately, we’ve seen a large influx of bolding abuse where the author will bold keywords throughout the article. It makes the article look cheap, crappy and spammy. We’re cracking down by not accepting articles with keywords and key phrases that are bolded.
The right way to use bolding is on SUB-HEADS.
Beyond that, the rule on using bolding further is that “LESS IS MORE”… meaning, don’t go nuts and bold everything. It makes the article visually hard to read. Also, keep in mind that ezine publishers who reprint your content are not required to keep your font attributes…so think lowest common denominator when choosing attributes, if at all.