If you use a script-driven platform for your site, it stores its data in a database and the more substantial the site becomes, the more info it collects. As an example, if you start a web-based store, the size of the database that the e-commerce script employs will increase any time you add more items. The same applies for a forum script - the more users which register and the more opinions they submit, the larger the database. If your Internet sites become popular or you would like to add more content, this can be a problem in the event that your Internet hosting account has limited database storage area. What the specific effect of reaching the limit will be depends on the script - the Internet site can perform adequately, but you may not be able to include any new info; the website may be displayed with errors; or, in the most severe scenario, the whole site may simply go offline.