The most likely cause for a 500 error while using Joomla is the amount of memory allocated to php applications. To resolve this you create a php.ini file, which you can add to the related configuration folder in the /etc directory on linux hosts, or you can add the file directly to the directory where the php application is located.
In the php.ini file add:
memory_limit:40M
register_globals = 'off'
The registered globals option is a security feature that decreases the potential for nasty things to happen. Albeit the potential is practically miniscule, but turning registered globals off reduces risk even further.
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The start of a new year requires making new decisions, and trying different paths. I highly recommend diversifying your blog topics. If your blog is about electronics, talk about research. Or dare to talk about politics. Maybe interject some hot news topics, and dabble with pop culture. Overall what you blog about it not as important as the quality; be thorough and explicit. Provide substantial and useful information. Disseminate ideas, and rational. Post your thoughts, your ideas, your dreams. The internet is about content, and the best original content is what you think about.
Maybe start a new website. Current hosters know thats as simple as buying a new domain, and adding a virtualhost configuration. I like to play with CMS software every once in a while. Joomla 1.5 is coming soon, and given the tremendous hype it should make for highly controllable website interface. I have been extremely impressed with the progress of Joomla 1.5. Its simply cool. If your reading this and do not currently have a Wordpress blog, please start one 
Its simple, I promise.
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The default title of the Joomla CMS system is “Welcome to the Frontpage”. In the new Joomla 1.5rc1, to change the default homepage title tag do the following:
login to your administrator panel
From the menu tab select “main menu”
Click the “home” checkbox, then click the edit button
Then click the “Parameters System” on the right to drop down the menu
Now you can choose to display the default page title, you can change the page title, or you disable the page title. If you disable the page title, I have observed that the default homepage title becomes the title of the main article set to display on the homepage.
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I have used Joomla 1.x series many times in the past. The installation, and modification, of the system is unparalleled in my opinion. The expectation that I have for Joomla 1.5 are extremely exciting, and based on observations of Beta and RC versions, it appears that all expectations will be easily fulfilled. Th ease of administration, combined with the new design framework, will allow for increasingly appealing websites, that have much more potential for search engine indexing
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