Websites that make their customers work to read them are not the best way to get business. Miniscule fonts, text in colours that make it hard to see against the background colour, and lines that are piled on top of each other are problems, but they're easy to correct. Let's jump right in and look at two easy fixes:
Format your text using CSS.
Cascading Style Sheets (CSS) are the way to go - use one style sheet and control how text looks on your entire site. Make a change to the style sheet and your whole site is updated. It makes life a lot simpler
Make the font size big enough to read
Consider your target audience. Even if they are a group of teenage girls looking for new shoes, it's never a good idea to use tiny type. It doesn't have to be enormous, but up to a point, larger type is better. 12-pt Verdana is better than 8-pt Verdana.
And finally (not one of the 5 Easy Ways to Improve Legibility but still quite important) check your spelling. Nothing irritates me more on a web page than spelling errors - it simply makes you look like you don't care enough to get it right. Use that ubiquitous spell-check tool.
Making your website's content more legible is easy. It doesn't take a lot of time, mainly common sense. The payoff will be text that's more readable, customers that stick around long enough to get your message, and improved credibility with your visitors.